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add wait_for_voice app for MC

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8986 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2008-07-10 15:57:41 +00:00
parent d2e4dee2bb
commit 381c31486c
3 changed files with 149 additions and 0 deletions
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3
src/include/switch_ivr.h
View File

@ -314,6 +314,9 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_tone_detect_session(switch_core_sessi
SWITCH_DECLARE(switch_status_t) switch_ivr_play_file(switch_core_session_t *session, switch_file_handle_t *fh, const char *file,
switch_input_args_t *args);
SWITCH_DECLARE(switch_status_t) switch_ivr_wait_for_silence(switch_core_session_t *session, uint32_t thresh, uint32_t silence_hits,
uint32_t listen_hits, const char *file);
SWITCH_DECLARE(switch_status_t) switch_ivr_gentones(switch_core_session_t *session, char *script, int32_t loops, switch_input_args_t *args);
/*!

27
src/mod/applications/mod_dptools/mod_dptools.c
View File

@ -2102,6 +2102,31 @@ SWITCH_STANDARD_APP(unhold_function)
switch_ivr_unhold_uuid(switch_core_session_get_uuid(session));
}
#define WAIT_FOR_SILENCE_SYNTAX "<tresh> <silence hits> <listen hits> [<file>]"
SWITCH_STANDARD_APP(wait_for_silence_function)
{
char *argv[4] = { 0 };
uint32_t thresh, silence_hits, listen_hits;
int argc;
char *lbuf = NULL;
if (!switch_strlen_zero(data) && (lbuf = switch_core_session_strdup(session, data))
&& (argc = switch_separate_string(lbuf, ' ', argv, (sizeof(argv) / sizeof(argv[0])))) >= 3) {
thresh = atoi(argv[0]);
silence_hits = atoi(argv[1]);
listen_hits = atoi(argv[2]);
if (thresh > 0 && silence_hits > 0 && listen_hits > 0) {
switch_ivr_wait_for_silence(session, thresh, silence_hits, listen_hits, argv[3]);
return;
}
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Usage: %s\n", WAIT_FOR_SILENCE_SYNTAX);
}
#define SPEAK_DESC "Speak text to a channel via the tts interface"
#define DISPLACE_DESC "Displace audio from a file to the channels input"
#define SESS_REC_DESC "Starts a background recording of the entire session"
@ -2226,6 +2251,8 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_dptools_load)
SAF_SUPPORT_NOMEDIA);
SWITCH_ADD_APP(app_interface, "say", "say", "say", say_function, SAY_SYNTAX, SAF_NONE);
SWITCH_ADD_APP(app_interface, "wait_for_silence", "wait_for_silence", "wait_for_silence", wait_for_silence_function, WAIT_FOR_SILENCE_SYNTAX, SAF_NONE);
SWITCH_ADD_DIALPLAN(dp_interface, "inline", inline_dialplan_hunt);
/* indicate that the module should continue to be loaded */

119
src/switch_ivr_play_say.c
View File

@ -1195,6 +1195,125 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_play_file(switch_core_session_t *sess
return status;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_wait_for_silence(switch_core_session_t *session, uint32_t thresh, uint32_t silence_hits, uint32_t listen_hits, const char *file)
{
uint32_t score, count = 0, j = 0;
double energy = 0;
switch_channel_t *channel = switch_core_session_get_channel(session);
int divisor = 0;
switch_codec_t *read_codec = switch_core_session_get_read_codec(session);
uint32_t org_silence_hits = silence_hits;
uint32_t channels;
switch_frame_t *read_frame;
switch_status_t status = SWITCH_STATUS_FALSE;
int16_t *data;
int listening = 0;
int countdown = 0;
switch_codec_t raw_codec = {0};
int16_t *abuf = NULL;
switch_frame_t write_frame = {0};
switch_file_handle_t fh = {0};
switch_assert(read_codec);
if (file) {
if (switch_core_file_open(&fh,
file,
read_codec->implementation->number_of_channels,
read_codec->implementation->actual_samples_per_second,
SWITCH_FILE_FLAG_READ | SWITCH_FILE_DATA_SHORT, NULL) != SWITCH_STATUS_SUCCESS) {
switch_core_session_reset(session, SWITCH_TRUE);
return SWITCH_STATUS_NOTFOUND;
}
switch_zmalloc(abuf, SWITCH_RECOMMENDED_BUFFER_SIZE);
write_frame.data = abuf;
write_frame.buflen = SWITCH_RECOMMENDED_BUFFER_SIZE;
}
if (switch_core_codec_init(&raw_codec,
"L16",
NULL,
read_codec->implementation->actual_samples_per_second,
read_codec->implementation->microseconds_per_frame / 1000,
1, SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE,
NULL, switch_core_session_get_pool(session)) != SWITCH_STATUS_SUCCESS) {
status = SWITCH_STATUS_FALSE;
goto end;
}
write_frame.codec = &raw_codec;
divisor = read_codec->implementation->actual_samples_per_second / 8000;
channels = read_codec->implementation->number_of_channels;
switch_core_session_set_read_codec(session, &raw_codec);
while (switch_channel_ready(channel)) {
status = switch_core_session_read_frame(session, &read_frame, SWITCH_IO_FLAG_NONE, 0);
if (!SWITCH_READ_ACCEPTABLE(status)) {
break;
}
if (abuf) {
switch_size_t olen = raw_codec.implementation->samples_per_frame;
if (switch_core_file_read(&fh, abuf, &olen) != SWITCH_STATUS_SUCCESS) {
break;
}
write_frame.samples = olen;
write_frame.datalen = olen * sizeof(int16_t);
if ((status = switch_core_session_write_frame(session, &write_frame, SWITCH_IO_FLAG_NONE, 0)) != SWITCH_STATUS_SUCCESS) {
break;
}
}
if (countdown) {
if (!--countdown) {
break;
} else {
continue;
}
}
data = (int16_t *) read_frame->data;
for (energy = 0, j = 0, count = 0; count < read_frame->samples; count++) {
energy += abs(data[j++]);
j += channels;
}
score = (uint32_t) (energy / (read_frame->samples / divisor));
if (score >= thresh) {
listening++;
}
if (listening > listen_hits && score < thresh) {
if (!--silence_hits) {
countdown = 25;
}
} else {
silence_hits = org_silence_hits;
}
}
switch_core_session_set_read_codec(session, NULL);
switch_core_codec_destroy(&raw_codec);
end:
if (abuf) {
switch_core_file_close(&fh);
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_read(switch_core_session_t *session,
uint32_t min_digits,
uint32_t max_digits,